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SC4614

500kHz Voltage Mode PWM Controller

Semtech Corporation 

SC4614

POWER MANAGEMENT

Absolute Maximum Ratings

Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified

in the Electrical Characteristics section is not implied.

Parameter

Symbol

Maximum

Units

Input Supply Voltage

VCC

20

V

BST to GND

BST to PN

PN to GND

PN to GND Negative Pulse (tpulse < 20ns)

DL to GND

DL to GND Negative Pulse (tpulse < 20ns)

DH to PN

DH to PN Negative Pulse (tpulse < 20ns)

DRV to GND

Operating Ambient Temperature Range

Operating Junction Temperature

Thermal Resistance Junction to Ambient

Thermal Resistance Junction to Case

Lead Temperature (Soldering) 10s

Storage Temperature

VBST

VBST_PN

VPN

VPN_PULSE

VDL

VDL_PULSE

VDH_PN

VDH_PULSE

VDRV

TA

TJ

θJA

θJC

TLEAD

TSTG

40

10

-1 to 30

-5

-1 to +10

-3

-1 to +10

-3

10

-40 to 85

-40 to 125

136

45

300

-65 to 150

V

V

V

V

V

V

V

V

V

°C

°C

°C/W

°C/W

°C

°C

Electrical Characteristics

Unless specified: VCC = 5V to 18V; VFB = VO; VBST - VPN = 5V to 8.2V; TA = -40 to 85°C

Parameter

General

VCC Supply Voltage

VCC Quiescent Current

VCC Under Voltage Lockout

BST to PN Supply Voltage

BST Quiescent Current

Internal LDO

LDO Output

Dropout Voltage

Symbol

VCC

IQVCC

UVVCC

VBST_PN

IQBST

VDRV

VDROP

Conditions

VCC = 12V, VBST -VPN = 8.2V

VHYST = 100mV

VCC = 12V, VBST -VPN = 8.2V

8.6V < VCC < 18V

4V < VCC < 8.6V

Min Typ Max Units

4

18

V

5

7

mA

4

V

4

10

V

3

mA

8.2

V

0.4

V

 2005 Semtech Corp.

2

www.semtech.com

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